La Paz University Hospital View Institution's Website 2 articles published in JoVE Engineering Surgical Techniques for Catheter Placement and 5/6 Nephrectomy in Murine Models of Peritoneal Dialysis Guadalupe Tirma González-Mateo1,2, Lucía Pascual-Antón1, Pilar Sandoval1, Abelardo Aguilera Peralta3, Manuel López-Cabrera1 1Molecular Biology Research Centre Severo Ochoa, Spanish National Research Council, 2IdiPAZ Research Institute, La Paz University Hospital, 3Princesa Research Institute, La Princesa University Hospital This article shows the method for the surgical placement in mice of an intraperitoneal catheter attached to an access port that is positioned at the back of the animal. Moreover, it explains the procedure for a 5/6 nephrectomy to resemble the uremic state of PD patients. Medicine Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures David Filgueiras-Rama1, Alejandro Estrada1, Josh Shachar2, Sergio Castrejón1, David Doiny1, Marta Ortega1, Eli Gang3, José L. Merino1 1Cardiology, Robotic Cardiac Electrophysiology and Arrhythmia Unit, La Paz University Hospital, 2Magnetecs Corp., 3Cardiology, Geffen School of Medicine at UCLA Los Angeles This report provides a detailed description of a new remote navigation system based on magnetic driven forces, which has been recently introduced as a new robotic tool for human cardiac electrophysiology procedures.